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There is an ever-lasting issue of extending the behavior of classes while not having to change their implementation. In this video, we delve into one of the solutions - the Decorator design pattern. A cornerstone of object-oriented design principles such as the Single Responsibility Principle, the Open Closed Principle, and the Liskov Substitution Principle, the Decorator pattern offers a powerful approach to modifying an object's behavior without changing its class.
The Decorator steps in to add or enhance the functionalities of an object around the execution of a specific method. That allows the object to continue performing its core role while the Decorator adds to or alters its behavior.
A significant advantage of the Decorator pattern is its ability to combat logic duplication. Through a meticulous application of the decorator in the demo code, we will remove duplicated clauses from all subject classes. The decorator will effectively add the shared responsibility uniformly across all the relevant implementations of an interface.
In essence, the Decorator stands as an intermediary, letting the original classes operate as intended while ensuring that shared logic (such as excluding certain conditions) is managed consistently across all instances.
By improving modularity and reducing duplication, this tool can significantly enhance the quality of your code. We encourage you to dive into this pattern and leverage it in your work.

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